Home / 2,740.48-4,104.96-1,280.80

Finding the Fourth Proportional to 2,740.48, 4,104.96 and 1,280.80

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Solution

The fourth proportional to 2,740.48, 4,104.96 and 1,280.80 is: 1,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.48 : 4,104.96 = 1,280.80 : x
  2. Step 2: Convert to fraction form
    2,740.48/4,104.96 = 1,280.80/x
  3. Step 3: Cross multiply
    2,740.48x = 4,104.96 × 1,280.80
  4. Step 4: Simplify right side
    2,740.48x = 5,257,632.77
  5. Step 5: Solve for x
    x = 5,257,632.77/2,740.48
  6. Step 6: Final answer
    x = 1,918.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.